Marie Stugaard

• Villegas-Martinez, Manuel; Odland, Hans Henrik; Hammersbøen, Lars Egil; Sletten, Ole Jakob; Stugaard, Marie & Witsø, Marit Helene Langset [Show all 10 contributors for this article] (2023). Pulse arrival time variation as a non-invasive marker of acute response to cardiac resynchronization therapy. Europace. ISSN 1099-5129. 25(3), p. 1183–1192. doi: 10.1093/europace/euad013. Full text in Research Archive Show summary

  Successful cardiac resynchronization therapy (CRT) shortens the pre-ejection period (PEP) which is prolonged in the left bundle branch block (LBBB). In a combined animal and patient study, we investigated if changes in the pulse arrival time (PAT) could be used to measure acute changes in PEP during CRT implantation and hence be used to evaluate acute CRT response non-invasively and in real time.

• Inoue, Katsuji; Khan, Faraz Hameed; Remme, Espen W.; Ohte, Nobuyuki; García-Izquierdo, Eusebio & Chetrit, Michael [Show all 18 contributors for this article] (2021). Determinants of left atrial reservoir and pump strain and use of atrial strain for evaluation of left ventricular filling pressure. European Heart Journal-Cardiovascular Imaging. ISSN 2047-2404. 23(1), p. 61–70. doi: 10.1093/ehjci/jeaa415. Full text in Research Archive
• Larsen, Terje H; Stugaard, Marie; Rotevatn, Svein; Nygård, Ottar & Nordrehaug, Jan Erik (2015). Clinical significance of late enhancement and regional wall remodeling assessed by 3T magnetic resonance imaging. Clinical Medicine Insights: Cardiology. ISSN 1179-5468. 9, p. 17–24. doi: 10.4137/CMC.S20291.
• Hodt, Anders; Hisdal, Jonny; Stugaard, Marie; Stranden, Einar; Atar, Dan & Steine, Kjetil (2015). Increased LV apical untwist during preload reduction in healthy humans. An echocardiographic speckle tracking study during lower body negative pressure (LBNP) . Physiological Reports. ISSN 2051-817X. 3(3). doi: 10.14814/phy2.12330. Full text in Research Archive Show summary

  Background: We sought to investigate the effect of reduced preload on LV untwist and early diastolic filling in healthy individuals. Methods: Twelve healthy men, 22 (22,23) years of age, were examined at rest and during applied lower body negative pressure (LBNP) of -20 mmHg and -40 mmHg, respectively. Regional untwist and untwist rate during IVRT were calculated at LV basal, papillary, sub-papillary and apical short axis levels by two dimensional speckle tracking echocardiography. LV early diastolic filling was assessed by transmitral E-wave (E) peak velocity by pulsed Doppler and flow propagation velocity (Vp) by color M-mode Doppler and early diastolic pulsed Doppler tissue velocities (E`) from septal and lateral mitral annulus. Results: From rest to LBNP -40 mmHg the LV untwist and untwist rate at sub-papillary level increased from 2.3 (1.4,3.5) to 4.5 (3.1,7.6) degrees and from -36 (-51,-25) to -69 (-127,-42) /s (p<0.001, p=0.003), respectively, while apical untwist and untwist rate increased from 3.9 (2.3,4.3) to 7.6 (6.4,10.5) degrees and from -51 (-69,-40) to -118 (-170,-84) /s (p<0.001, p<0.001), respectively. Since untwist and untwist rate at the basal level were unchanged, this created markedly larger base to apical untwist and untwist rate gradients from rest to LBNP -40 mmHg. E, Vp and E` were reduced by 34, 32 and 39 %, respectively. Conclusions: LV untwist and untwist rate during IVRT were increased at apical levels, which might be a physiological mechanism to minimize the impairment in LV early diastolic filling during preload reduction.

• Hodt, Anders; Stugaard, Marie; Hisdal, Jonny; Stranden, Einar; Atar, Dan & Steine, Kjetil (2012). Regional LV deformation in healthy individuals during isovolumetric contraction and ejection phases assessed by 2D speckle tracking echocardiography. Clinical Physiology and Functional Imaging. ISSN 1475-0961. 32(5), p. 372–379. doi: 10.1111/j.1475-097X.2012.01139.x.
• Hodt, Anders; Hisdal, Jonny; Stugaard, Marie; Stranden, Einar; Atar, Dan & Steine, Kjetil (2011). Reduced preload elicits increased LV twist in healthy humans. Clinical Physiology and Functional Imaging. ISSN 1475-0961. 31(5), p. 382–389. doi: 10.1111/j.1475-097X.2011.01029.x.

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• Stugaard, Marie; Larsen, Terje H; Nygård, Ottar; Nordrehaug, Jan Erik & Rotevatn, Svein (2009). Detection of non-viable myocardium by 3T MRI in patients without obstructive coronary artery disease. Cardiology. ISSN 0008-6312. 113, p. 88–89.
• Larsen, Terje H; Stugaard, Marie; Nygård, Ottar; Rotevatn, Svein & Nordrehaug, Jan Erik (2009). Delayed contrast-enhancement and left ventricular remodelling demonstrated at high-field 3T MRI of patients with suspected coronary artery disease. Cardiology. ISSN 0008-6312. 113, p. 82–83.
• Eikvil, Line; Olafsdottir, Jorunn B.; Stugaard, Marie & Lundervold, Arvid (1992). Gjenkjenning av flytmønstre fra Doppler ultralyd bilder.
• Eikvil, Line; Olafsdottir, Jorunn B.; Stugaard, Marie & Lundervold, Arvid (1992). Recogition of flow pattern in Doppler ultrasound images. Norsk Regnesentral.

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